/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package gov.nasa.ensemble.common.collections;

/**
 * A functor for unidirectional mapping.
 * @author <a href="matthew.e.boyce@nasa.gov">Matthew E.Boyce</a>
 *
 * @param <K>
 * @param <V>
 */
public interface Mapping<K, V> {
	/**
	 * Mapping function.
	 * @param key The value to map from.
	 * @return The value key maps to.
	 */
	V get(K key);
}
